CVE-2026-0204

Q: How do I fix CVE-2026-0204?

Upgrade sonicos to 8.2.0-8009 or later.

Q: Is CVE-2026-0204 being actively exploited?

Not that we know of. CVE-2026-0204 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.

Q: How severe is CVE-2026-0204?

CVE-2026-0204 has a CVSS v3 base score of 8.0, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-0204 affect?

Published advisories record a fix for sonicos (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

8.0

CVSS v3

NVD

Description

A vulnerability in the access control mechanism of SonicOS may allow certain management interface functions to be accessible under specific conditions.

CWE-306Missing Authentication for Critical Function CWE-1390

How to fix

Remediation Available

sonicosNVD

Affected:>= 8.0.0-8035, < 8.2.0-8009Fixed in:8.2.0-8009CVE-2026-0204derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.42%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Vendor Advisory1

psirt.global.sonicwall.com

Related Vulnerabilities

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-3248	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-10271	High	7.5	100%	KEV + Ransom	-
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-1388	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-21839	High	7.5	100%	KEV	-
CVE-2021-37415	Critical	9.8	100%	KEV	-

Common questions

How do I fix CVE-2026-0204?

Upgrade sonicos to 8.2.0-8009 or later.

Is CVE-2026-0204 being actively exploited?

Not that we know of. CVE-2026-0204 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.

How severe is CVE-2026-0204?

CVE-2026-0204 has a CVSS v3 base score of 8.0, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-0204 affect?

Published advisories record a fix for sonicos (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-0204

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-05.